Degumming technology of broussonetia papyrifera fiber with ultrasonic wave- microwave assisted to chemic technique and alkaline pectinase was introduced in this article. Practice showed that this degumming technology had the characteristics of efficient, little pollution and excellent fiber performance index. It would have broad prospects in the degumming process of broussonetia papyrifera bark and other similar material.

The spinning process of regeneration feather protein /PVA fiber is introduced in this article；The concentration and the solubility temperature of peracetic acid , ultrasonic processing time and the proportion of regeneration feather protein /PVA are selected as analysis objects, the fibers are extracted according to 9 orthogonal expts combinations, and the fiber’s performances are tested. Test schemes are optimized using gray clustering analysis which calculating process is showed with Matlab.